UPDATE (3 p.m.) -- The lockdown was lifted around 2 p.m. Tuesday, according to a Facebook page for Saranac Elementary School. "After a complete and thorough investigation by local authorities and administration, it was determined that our school is safe and a lockdown can be lifted at this time."

SARANAC, MI -- Saranac Schools have been on lockdown since about 10 a.m. today because of a "potential external threat," school officials said.

The lockdown was issued about 10 a.m., an official in the district's superintendent's office said.

She had no other details about the possible threat.

Police are at the schools.

The lockdown covers the entire school campus along Pleasant Street in Saranac and involves the junior/senior high school and elementary school.